1st of all, sorry to here the news. 2nd, You stated that he did this to your brother too before you. You have zero fault in this matter. As said above, there are other issues that are probably not known to you between your mom and dad. I aslo agree with the mods that this is something that is hard to give advise on. Not to be blunt, but right now at this time, your Mom is doing what she has to do to protect you, your brother,and her. The events that have led to this seperation(the ones you know and don't know about) justify the seperation and is the best thing for you as a family. It will either get someone away from you that is hurting you, or make that person realize it is wrong. But also remember, he will always be your Dad and people do make mistakes and people do change. So don't burn any bridges that aren't necessary. And as far as your Dad telling you this is your fault, you need to tell your Mom about this now...right now. This is something that she needs to handle with him, not you. Your Dad is just lashing out at you because he is mad and scared. That doesn't make it right. What she did was her decision, not yours. And what led her to it was his decision to hit you, not yours. Heck you are barely in the equation of this incident. The most important thing for you to remember is this would have happened sooner or later with or without you being his target. My wife and I will be praying for you and your family and your Dad. Keep your head high, and your loved ones close and you will be ok....